9689842969 has 9 divisors (see below), whose sum is σ = 9763336093. Its totient is φ = 9616901152.

The previous prime is 9689842963. The next prime is 9689842973. The reversal of 9689842969 is 9692489869.

The square root of 9689842969 is 98437.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 122655625 + 9567187344 = 11075^2 + 97812^2 .

It is not a de Polignac number, because 9689842969 - 2³ = 9689842961 is a prime.

It is a super-2 number, since 2×9689842969² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9689842898 and 9689842907.

It is not an unprimeable number, because it can be changed into a prime (9689842961) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 17029317 + ... + 17029885.

Almost surely, 2^9689842969 is an apocalyptic number.

9689842969 is the 98437-th square number.

9689842969 is the 49219-th centered octagonal number.

It is an amenable number.

9689842969 is a deficient number, since it is larger than the sum of its proper divisors (73493124).

9689842969 is an frugal number, since it uses more digits than its factorization.

9689842969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1484 (or 742 counting only the distinct ones).

The product of its digits is 120932352, while the sum is 70.

The cubic root of 9689842969 is about 2131.9265903857.

The spelling of 9689842969 in words is "nine billion, six hundred eighty-nine million, eight hundred forty-two thousand, nine hundred sixty-nine".